J/A+A/506/213ivo://CDS.VizieR/J/A+A/506/213doi:10.26093/cds/vizier.35060213CDSNiemczura E.Morel T.Aerts C.2017-12-22T05:33:11Z2009-12-30T07:30:53ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frearly-type-starsb-starschemical-abundancesThe CoRoT satellite is collecting precise time-resolved photometry for tens of asteroseismology targets. To ensure a correct interpretation of the CoRoT data, the atmospheric parameters, chemical compositions, and rotational velocities of the stars must be determined. The main goal of the ground-based seismology support program for the CoRoT mission was to obtain photometric and spectroscopic data for stars in the fields monitored by the satellite. These ground-based observations were collected in the GAUDI archive. High-resolution spectra of more than 200 B-type stars are available in this database, and about 45% of them is analysed here. To derive the effective temperature of the stars, we used photometric indices. Surface gravities were obtained by comparing observed and theoretical Balmer line profiles. To determine the chemical abundances and rotational velocities, we used a spectrum synthesis method, which consisted of comparing the observed spectrum with theoretical ones based on the assumption of LTE. Atmospheric parameters, chemical abundances, and rotational velocities were determined for 89 late-B stars. The dominant species in their spectra are iron-peak elements. The average Fe abundance is 7.24+/-0.45dex. The average rotational velocity is 126km/s, but there are 13 and 20 stars with low and moderate Vsini values, respectively. The analysis of this sample of 89 late B-type stars reveals many chemically peculiar (CP) stars. Some of them were previously known, but at least 9 new CP candidates, among which at least two HgMn stars, are identified in our study. These CP stars as a group exhibit Vsini values lower than the stars with normal surface chemical composition.2009A&A...506..213Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/506/213CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/506/213https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/506/213http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/506/213https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/506/213https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/506/213http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/506/213GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/506/213/table1 (Description of the analysed stars and their observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/506/213/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/506/213/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/506/213/table1?GETtext/xml+votable180.050000true92.9839508-1.32363750.0055555555555555565/5514 6/21341 21343 21367 21372 21673 21677-21678 21681 21684 21730 21742 22016 22020 22023 22034 22043 22051 22070 22077-22079 22083 22096 22104 22108 22116 22119 22145 22148 22157-22158 22161 22167 22170 22173 22177 22181 22183 22193 22196-22197 22208 22216-22218 22244 22246 22248 22254 22260 22264 22315 22319 23575 29882 29946 30213 30220 30225-30226 30229 30270 30286 30289 30292 30298 30317 30325 30349-30350 30424 30439 30441-30442 30507 31767 31808 31813-31814 31824https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/506/213?format=asciiOpticaldefaultJ/A+A/506/213/table1Description of the analysed stars and their observationsObsObservation datestime.epoch;obsnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD numbermeta.id;meta.mainintprimarySpTypeMK spectral typesrc.spTypecharVmag? V magnitudemagphot.mag;em.opt.VfloatnullableE(B-V)? Interstellar extinctionmagphot.color.excessfloatnullableBinInformations about binarity, in refs.dat filemeta.bibcharAbunPrevious abundance analysis, in refs.dat filemeta.bibcharSimbadSimbad column added by the CDSchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainInstSpectrographmeta.id;instrcharJ/A+A/506/213/refsReferences of table1RefReference numbermeta.id;meta.mainintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ/A+A/506/213/table2Atmospheric parameters, abundances of chemical elements and rotation velocities of all analysed starse_Al? The error of Al abundancestat.errorfloatnullableGa? Ga abundance log(epsilon_Ga)phys.abundfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD numbermeta.id;meta.mainintTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloatVsiniRotational velocitykm/sphys.veloc.rotatinte_VsiniThe error of Vsinikm/sstat.error;phys.veloc.rotatintHe? He abundance log(epsilon_He)phys.abundfloatnullablee_He? The error of He abundancestat.errorfloatnullableo_He? Number of lines for He abundance determinationmeta.numberintnullableC? C abundance log(epsilon_C)phys.abundfloatnullablee_C? The error of C abundancestat.errorfloatnullableo_C? Number of lines for C abundance determinationmeta.numberintnullableN? N abundance log(epsilon_N)phys.abundfloatnullablee_N? The error of N abundancestat.errorfloatnullableo_N? Number of lines for N abundance determinationmeta.numberintnullableO? O abundance log(epsilon_O)phys.abundfloatnullablee_O? The error of O abundancestat.errorfloatnullableo_O? Number of lines for O abundance determinationmeta.numberintnullableNe? Ne abundance log(epsilon_Ne)phys.abundfloatnullablee_Ne? The error of Ne abundancestat.errorfloatnullableo_Ne? Number of lines for Ne abundance determinationmeta.numberintnullableMg? Mg abundance log(epsilon_Mg)phys.abundfloatnullablee_Mg? The error of Mg abundancestat.errorfloatnullableo_Mg? Number of lines for Mg abundance determinationmeta.numberintnullableAl? Al abundance log(epsilon_Al)phys.abundfloatnullableo_Al? Number of lines for AL abundance determinationmeta.numberintnullableSi? Si abundance log(epsilon_Si)phys.abundfloatnullablee_Si? The error of Si abundancestat.errorfloatnullableo_Si? Number of lines for Si abundance determinationmeta.numberintnullableP? P abundance log(epsilon_P)phys.abundfloatnullablee_P? The error of P abundancestat.errorfloatnullableo_P? Number of lines for P abundance determinationmeta.numberintnullableS? S abundance log(epsilon_S)phys.abundfloatnullablee_S? The error of S abundancestat.errorfloatnullableo_S? Number of lines for S abundance determinationmeta.numberintnullableCl? Cl abundance log(epsilon_Cl)phys.abundfloatnullablee_Cl? The error of Cl abundancestat.errorfloatnullableo_Cl? Number of lines for Cl abundance determinationmeta.numberintnullableCa? Ca abundance log(epsilon_Ca)phys.abundfloatnullablee_Ca? The error of Ca abundancestat.errorfloatnullableo_Ca? Number of lines for Ca abundance determinationmeta.numberintnullableSc? Sc abundance log(epsilon_Sc)phys.abundfloatnullablee_Sc? The error of Sc abundancestat.errorfloatnullableo_Sc? Number of lines for Sc abundance determinationmeta.numberintnullableTi? Ti abundance log(epsilon_Ti)phys.abundfloatnullablee_Ti? The error of Ti abundancestat.errorfloatnullableo_Ti? Number of lines for Ti abundance determinationmeta.numberintnullableV? V abundance log(epsilon_V)phys.abundfloatnullablee_V? The error of V abundancestat.error;pos.cartesian.yfloatnullableo_V? Number of lines for V abundance determinationmeta.numberintnullableCr? Cr abundance log(epsilon_Cr)phys.abundfloatnullablee_Cr? The error of Cr abundancestat.errorfloatnullableo_Cr? Number of lines for Cr abundance determinationmeta.numberintnullableMn? Mn abundance log(epsilon_Mn)phys.abundfloatnullablee_Mn? The error of Mn abundancestat.errorfloatnullableo_Mn? Number of lines for Mn abundance determinationmeta.numberintnullableFe? Fe abundance log(epsilon_Fe)phys.abundfloatnullablee_Fe? The error of Fe abundancestat.error;phys.abund.Fefloatnullableo_Fe? Number of lines for Fe abundance determinationmeta.numberintnullableNi? Ni abundance log(epsilon_Ni)phys.abundfloatnullablee_Ni? The error of Ni abundancestat.errorfloatnullableo_Ni? Number of lines for Ni abundance determinationmeta.numberintnullablee_Ga? The error of Ga abundancestat.errorfloatnullableo_Ga? Number of lines for Ga abundance determinationmeta.numberintnullableSr? Sr abundance log(epsilon_Sr)phys.abundfloatnullablee_Sr? The error of Sr abundancestat.errorfloatnullableo_Sr? Number of lines for Sr abundance determinationmeta.numberintnullableY? Y abundance log(epsilon_Y)phys.abundfloatnullablee_Y? The error of Y abundancestat.error;pos.cartesian.yfloatnullableo_Y? Number of lines for Y abundance determinationmeta.numberintnullableZr? Zr abundance log(epsilon_Zr)phys.abundfloatnullablee_Zr? The error of Zr abundancestat.errorfloatnullableo_Zr? Number of lines for Zr abundance determinationmeta.numberintnullableBa? Ba abundance log(epsilon_Ba)phys.abundfloatnullablee_Ba? The error of Ba abundancestat.errorfloatnullableo_Ba? Number of lines for Ba abundance determinationmeta.numberintnullableJ/A+A/506/213/table3Average abundances for the entire sample and the non-CP starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintElName of the elementmeta.id;phys.atmol.elementcharlog(eps)allAverage abundance for the entire samplephys.abundfloate_log(eps)allStandard deviationstat.errorfloatlog(eps)norAverage abundance for non-CP starsphys.abundfloate_log(eps)norStandard deviationsstat.errorfloatlog(eps)sunAbundance of the Sun (1)phys.abundfloat